Elliot McClenaghan

Research Fellow at the London School of Hygiene and Tropical Medicine

Elliot McClenaghan is a Research Fellow at the London School of Hygiene and Tropical Medicine, where his work focuses on the epidemiological analysis of observational health data.

The Chi-Squared Test

The chi-squared test, often written as χ2 test, is a statistical hypothesis test used in the analysis of categorical variables to determine whether observed data are different from expectations. In this article, we explore the basics of this important test.

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The Binomial Test

The Binomial test, sometimes referred to as the Binomial exact test, is a test used in sampling statistics to assess whether a proportion of a binary variable is equal to some hypothesized value.

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Mann-Whitney U Test: Assumptions and Example

The Mann-Whitney U Test, also known as the Wilcoxon Rank Sum Test, is a non-parametric statistical test used to compare two samples or groups. In this article, we explore the basics of the Test and work through an example.